Elements 5 playback not working

After the latest update playback stopped working. I tried un-installing everything and re-installing and I still have the same problem. How do I resolve this?
I keep getting this:

Here is a diagnostics report:
Dorico Diagnostics.zip (2.4 MB)

It looks like (at some time) you installed Halion 7. Dorico does not include Halion 7. It only includes Halion Sonic 7 (a cut down free version).

I downloaded all the stuff that said ‘recommended’ and it looks like all I have is Halion Sonic but I keep getting that error message.

In Dorico itself, Stephan, go to the Play page of Preferences. Set the Default HALion plug-in setting to Use preferred, then set Preferred HALion plug-in to HALion Sonic, click Apply and Close.

Thank you. That didn’t work though.

Follow up… It didn’t work on the file I had been working on but it did work on a fresh file I created… Thank you

For the existing project that doesn’t play back, open it, go to Play > Playback Template, choose one of the factory playback templates, click Apply and Close, and that should bring playback back in that file too.